52641-31-3Relevant academic research and scientific papers
HIGHER PURITY HYBRID PIGMENTS
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Page/Page column 14; 15, (2009/07/03)
A hybrid pigment composition and method of producing the hybrid pigment composition is provided. The hybrid pigment composition includes a purified dye, purified pigment, purified dye intermediate, or purified pigment intermediate and a fibrous clay. The fibrous clay is palygorskite, sepiolite, or a combination thereof. The hybrid pigment composition is produced by reacting the purified dye, purified pigment, purified dye intermediate, or purified pigment intermediate with the fibrous clay.
Photooxidation of Leuco Dyes. XII. Time Resolved Investigations on the Photooxidation of Bis-sulfuric Acid Monoesters of Leucothioindigoid Compounds
Hinzmann, G.,Grummt, U.-W.,Langbein, H.,Fassler, D.
, p. 953 - 962 (2007/10/02)
The photooxidation of 4,4'-dimethyl-6,6'-dichlorothioindigosol (1) was studied by means of laser and conventional flash photolysis.Three transients were detected and assigned to a radical R generated by homolytic splitting of one O-S-bond of the parent compound and to two further radicals which are formed from R by hydrolytic cleavage of the second ester group.The latter two radicals are in a protolytic equilibrium with each other and react, depending on the nature of the solvent by H-atom abstraction, or by disproportionation forming the leuco-thioindigoid dye or bot h dye and leuco dye.A mechanistic scheme is proposed.
